Scientific Highlights
All Two-Loop Feynman Integrals for Five-Point One-Mass Scattering
We compute the complete set of two-loop master integrals for the scattering of four massless particles and a massive one. Our results are ready for phenomenological applications, removing a major obstacle to the computation of complete next-to-next-to-leading order QCD corrections to processes such as the production of a H/Z/W boson in association with two jets at the LHC. Furthermore ...
Muonic X-rays peer into brooch from Roman city
Using Muon Induced X-ray Emission, researchers could reveal the inner composition of a knob-bow fibula, excavated at Augusta Raurica in northern Switzerland.
Making sense of the muon’s misdemeanours
An exotic atom called muonium could explain why muons won’t stick to the rules, believe researchers using the Swiss Muon Source at Paul Scherrer Institute PSI.
Lab News
PSI electronics apprentices once again perform very successfully at the SwissSkills Championships 2025
At the biennial SwissSkills Championships for young professionals, which took place in Bern from 17 to 21 September 2025, four of our former and current electronics apprentices demonstrated their exceptionally strong skills with great success in two different competition categories.
PSI2025 Workshop on the ‘Physics of fundamental Symmetries and Interactions’
From September 7-12, 2025, more than 170 participants from 20 countries met for the PSI2025 workshop, the 7th edition in the series.
WOPM2025 at PSI - Workshop on optically-pumped magnetometers
From August 6 to 8, the 2025 workshop on 'Optically-Pumped Magnetometers' took place at PSI with a full day of Summer School lectures, followed by scientific sessions attended by 145 researchers from institutions worldwide.